From 11a63a5335eb7b5da4ca38014fa83be5d437144d Mon Sep 17 00:00:00 2001 From: John Hubbard Date: Fri, 10 Apr 2026 19:49:32 -0700 Subject: [PATCH] gpu: nova-core: Hopper/Blackwell: skip GFW boot waiting Hopper and Blackwell GPUs use FSP-based secure boot and do not require waiting for GFW_BOOT completion. Add a Gh100 GPU HAL that returns Ok(()) for wait_gfw_boot_completion(), and route Hopper and Blackwell architectures to it. Signed-off-by: John Hubbard Acked-by: Danilo Krummrich Link: https://patch.msgid.link/20260411024953.473149-8-jhubbard@nvidia.com Signed-off-by: Alexandre Courbot --- drivers/gpu/nova-core/gpu/hal.rs | 11 +++++------ drivers/gpu/nova-core/gpu/hal/gh100.rs | 18 ++++++++++++++++++ 2 files changed, 23 insertions(+), 6 deletions(-) create mode 100644 drivers/gpu/nova-core/gpu/hal/gh100.rs diff --git a/drivers/gpu/nova-core/gpu/hal.rs b/drivers/gpu/nova-core/gpu/hal.rs index a261c6af92bee..788de20ab5d3b 100644 --- a/drivers/gpu/nova-core/gpu/hal.rs +++ b/drivers/gpu/nova-core/gpu/hal.rs @@ -10,6 +10,7 @@ use crate::{ }, }; +mod gh100; mod tu102; pub(crate) trait GpuHal { @@ -19,11 +20,9 @@ pub(crate) trait GpuHal { pub(super) fn gpu_hal(chipset: Chipset) -> &'static dyn GpuHal { match chipset.arch() { - Architecture::Turing - | Architecture::Ampere - | Architecture::Ada - | Architecture::Hopper - | Architecture::BlackwellGB10x - | Architecture::BlackwellGB20x => tu102::TU102_HAL, + Architecture::Turing | Architecture::Ampere | Architecture::Ada => tu102::TU102_HAL, + Architecture::Hopper | Architecture::BlackwellGB10x | Architecture::BlackwellGB20x => { + gh100::GH100_HAL + } } } diff --git a/drivers/gpu/nova-core/gpu/hal/gh100.rs b/drivers/gpu/nova-core/gpu/hal/gh100.rs new file mode 100644 index 0000000000000..1ed5bccdda1d0 --- /dev/null +++ b/drivers/gpu/nova-core/gpu/hal/gh100.rs @@ -0,0 +1,18 @@ +// SPDX-License-Identifier: GPL-2.0 + +use kernel::prelude::*; + +use crate::driver::Bar0; + +use super::GpuHal; + +struct Gh100; + +impl GpuHal for Gh100 { + fn wait_gfw_boot_completion(&self, _bar: &Bar0) -> Result { + Ok(()) + } +} + +const GH100: Gh100 = Gh100; +pub(super) const GH100_HAL: &dyn GpuHal = &GH100; -- 2.47.3